Walmart offers the Fluidmaster Toilet Tank Repair Kit for $8.99. Opt for in-store pickup to dodge the $5.99 shipping fee. (Amazon charges the same price with free Prime shipping, while Home Depot and True Value charge the same via in-store pickup.) That's $1 less than last month's mention and is the lowest price we could find by $5. It includes parts for replacing the fill valve and flapper.